Provided herein are formulations of (2,4-dihydroxy-5-isopropyl-phenyl)-[5-(4-methyl-piperazin-1-ylmethyl)-1,3-dihydro-isoindol-2-yl]-methanone of formula (I): or a L-lactate salt thereof, in a phosphate or succinate buffer.本發明提供在磷酸鹽或琥珀酸鹽緩衝液中之如式(I)所示之(2,4-二羥基-5-異丙基-苯基)-[5-(4-甲基-六氫吡-1-基甲基)-1,3-二氫-異吲哚-2-基]-甲酮或其L-乳酸鹽的調製劑: